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<pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a>
<span class="sourceLineNo">002</span> * Copyright (C) 2017 dubenju@126.com.<a name="line.2"></a>
<span class="sourceLineNo">003</span> *<a name="line.3"></a>
<span class="sourceLineNo">004</span> * Licensed under the Apache License, Version 2.0 (the "License");<a name="line.4"></a>
<span class="sourceLineNo">005</span> * you may not use this file except in compliance with the License.<a name="line.5"></a>
<span class="sourceLineNo">006</span> * You may obtain a copy of the License at<a name="line.6"></a>
<span class="sourceLineNo">007</span> *<a name="line.7"></a>
<span class="sourceLineNo">008</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.8"></a>
<span class="sourceLineNo">009</span> *<a name="line.9"></a>
<span class="sourceLineNo">010</span> * Unless required by applicable law or agreed to in writing, software<a name="line.10"></a>
<span class="sourceLineNo">011</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.11"></a>
<span class="sourceLineNo">012</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.12"></a>
<span class="sourceLineNo">013</span> * See the License for the specific language governing permissions and<a name="line.13"></a>
<span class="sourceLineNo">014</span> * limitations under the License.<a name="line.14"></a>
<span class="sourceLineNo">015</span> */<a name="line.15"></a>
<span class="sourceLineNo">016</span><a name="line.16"></a>
<span class="sourceLineNo">017</span>package org.teapot.db.orm.util.keymatch;<a name="line.17"></a>
<span class="sourceLineNo">018</span><a name="line.18"></a>
<span class="sourceLineNo">019</span>import org.teapot.db.orm.IKeyValue;<a name="line.19"></a>
<span class="sourceLineNo">020</span><a name="line.20"></a>
<span class="sourceLineNo">021</span>import java.util.List;<a name="line.21"></a>
<span class="sourceLineNo">022</span>import java.util.Vector;<a name="line.22"></a>
<span class="sourceLineNo">023</span><a name="line.23"></a>
<span class="sourceLineNo">024</span><a name="line.24"></a>
<span class="sourceLineNo">025</span>/**<a name="line.25"></a>
<span class="sourceLineNo">026</span> * 抽象的匹配回调类。（带包）<a name="line.26"></a>
<span class="sourceLineNo">027</span> * @author dubenju@126.com<a name="line.27"></a>
<span class="sourceLineNo">028</span> * @since TeapotORM 0.0.2<a name="line.28"></a>
<span class="sourceLineNo">029</span> */<a name="line.29"></a>
<span class="sourceLineNo">030</span>// TODO:修正——————单实例<a name="line.30"></a>
<span class="sourceLineNo">031</span>public class DefaultMatchInstance implements IMatchInstance {<a name="line.31"></a>
<span class="sourceLineNo">032</span><a name="line.32"></a>
<span class="sourceLineNo">033</span>  protected static final int MATCHED = 0;<a name="line.33"></a>
<span class="sourceLineNo">034</span>  protected static final int TRA_AHEAD = 1;<a name="line.34"></a>
<span class="sourceLineNo">035</span>  protected static final int MAS_AHEAD = -1;<a name="line.35"></a>
<span class="sourceLineNo">036</span><a name="line.36"></a>
<span class="sourceLineNo">037</span>  /**<a name="line.37"></a>
<span class="sourceLineNo">038</span>   * 把字符串数组转换成为Vector.<a name="line.38"></a>
<span class="sourceLineNo">039</span>   *<a name="line.39"></a>
<span class="sourceLineNo">040</span>   * @param keys 字符串数组<a name="line.40"></a>
<span class="sourceLineNo">041</span>   * @return Vector<a name="line.41"></a>
<span class="sourceLineNo">042</span>   */<a name="line.42"></a>
<span class="sourceLineNo">043</span>  protected static Vector&lt;String&gt; toVector(String[] keys) {<a name="line.43"></a>
<span class="sourceLineNo">044</span>    if (keys == null) {<a name="line.44"></a>
<span class="sourceLineNo">045</span>      return null;<a name="line.45"></a>
<span class="sourceLineNo">046</span>    }<a name="line.46"></a>
<span class="sourceLineNo">047</span><a name="line.47"></a>
<span class="sourceLineNo">048</span>    Vector&lt;String&gt; vec = new Vector&lt;String&gt;();<a name="line.48"></a>
<span class="sourceLineNo">049</span>    for (int i = 0; i &lt; keys.length; i++) {<a name="line.49"></a>
<span class="sourceLineNo">050</span>      vec.add(keys[i]);<a name="line.50"></a>
<span class="sourceLineNo">051</span>    }<a name="line.51"></a>
<span class="sourceLineNo">052</span>    return vec;<a name="line.52"></a>
<span class="sourceLineNo">053</span>  }<a name="line.53"></a>
<span class="sourceLineNo">054</span><a name="line.54"></a>
<span class="sourceLineNo">055</span>  private int idxTra = 0;<a name="line.55"></a>
<span class="sourceLineNo">056</span>  private int idxMas = 0;<a name="line.56"></a>
<span class="sourceLineNo">057</span>  protected List&lt;IKeyValue&gt; loMas;<a name="line.57"></a>
<span class="sourceLineNo">058</span>  protected List&lt;IKeyValue&gt; loTra;<a name="line.58"></a>
<span class="sourceLineNo">059</span>  private   List&lt;String&gt; mkeys;<a name="line.59"></a>
<span class="sourceLineNo">060</span>  protected List&lt;String&gt; att;<a name="line.60"></a>
<span class="sourceLineNo">061</span><a name="line.61"></a>
<span class="sourceLineNo">062</span>  /* 参数对象取决于每个线程，因此它不能保留在单实例对象中. */<a name="line.62"></a>
<span class="sourceLineNo">063</span>  private Object arg;<a name="line.63"></a>
<span class="sourceLineNo">064</span><a name="line.64"></a>
<span class="sourceLineNo">065</span>  /**<a name="line.65"></a>
<span class="sourceLineNo">066</span>   * 返回参数.<a name="line.66"></a>
<span class="sourceLineNo">067</span>   * @return 返回参数。<a name="line.67"></a>
<span class="sourceLineNo">068</span>   * @since TeapotORM 0.0.2<a name="line.68"></a>
<span class="sourceLineNo">069</span>   */<a name="line.69"></a>
<span class="sourceLineNo">070</span>  public Object getArg() {<a name="line.70"></a>
<span class="sourceLineNo">071</span>    return this.arg;<a name="line.71"></a>
<span class="sourceLineNo">072</span>  }<a name="line.72"></a>
<span class="sourceLineNo">073</span><a name="line.73"></a>
<span class="sourceLineNo">074</span>  /**<a name="line.74"></a>
<span class="sourceLineNo">075</span>   * 设置属性.<a name="line.75"></a>
<span class="sourceLineNo">076</span>   * @param attr List<a name="line.76"></a>
<span class="sourceLineNo">077</span>   * @since TeapotORM 0.0.2<a name="line.77"></a>
<span class="sourceLineNo">078</span>   */<a name="line.78"></a>
<span class="sourceLineNo">079</span>  protected void setAttr(List&lt;String&gt; attr) {<a name="line.79"></a>
<span class="sourceLineNo">080</span>    this.att = attr;<a name="line.80"></a>
<span class="sourceLineNo">081</span>  }<a name="line.81"></a>
<span class="sourceLineNo">082</span><a name="line.82"></a>
<span class="sourceLineNo">083</span>  /**<a name="line.83"></a>
<span class="sourceLineNo">084</span>   * 匹配处理.<a name="line.84"></a>
<span class="sourceLineNo">085</span>   * @param mas Master<a name="line.85"></a>
<span class="sourceLineNo">086</span>   * @param tra Transaction<a name="line.86"></a>
<span class="sourceLineNo">087</span>   * @param mkeys 匹配<a name="line.87"></a>
<span class="sourceLineNo">088</span>   * @param attr 包括<a name="line.88"></a>
<span class="sourceLineNo">089</span>   * @param excludes 除外<a name="line.89"></a>
<span class="sourceLineNo">090</span>   * @param proc 匹配处理<a name="line.90"></a>
<span class="sourceLineNo">091</span>   * @param arg 参数<a name="line.91"></a>
<span class="sourceLineNo">092</span>   * @throws Exception 处理过程中发生的异常。<a name="line.92"></a>
<span class="sourceLineNo">093</span>   * @since TeapotORM 0.0.2<a name="line.93"></a>
<span class="sourceLineNo">094</span>   */<a name="line.94"></a>
<span class="sourceLineNo">095</span>  @SuppressWarnings("unchecked")<a name="line.95"></a>
<span class="sourceLineNo">096</span>  public &lt;T1 extends IKeyValue, T2 extends IKeyValue&gt; void keyMatch(List&lt;T1&gt; mas,<a name="line.96"></a>
<span class="sourceLineNo">097</span>      List&lt;T2&gt; tra, String[] mkeys,<a name="line.97"></a>
<span class="sourceLineNo">098</span>      String[] attr, String[] excludes, IMatch proc, Object arg)<a name="line.98"></a>
<span class="sourceLineNo">099</span>      throws Exception {<a name="line.99"></a>
<span class="sourceLineNo">100</span>    this.loMas = (List&lt;IKeyValue&gt;) mas;<a name="line.100"></a>
<span class="sourceLineNo">101</span>    this.loTra = (List&lt;IKeyValue&gt;) tra;<a name="line.101"></a>
<span class="sourceLineNo">102</span>    this.mkeys = toVector(mkeys);<a name="line.102"></a>
<span class="sourceLineNo">103</span>    setAttr(toVector(attr));<a name="line.103"></a>
<span class="sourceLineNo">104</span>    this.arg = arg;<a name="line.104"></a>
<span class="sourceLineNo">105</span><a name="line.105"></a>
<span class="sourceLineNo">106</span>    // 执行 主处理方法.<a name="line.106"></a>
<span class="sourceLineNo">107</span>    run(proc);<a name="line.107"></a>
<span class="sourceLineNo">108</span>  }<a name="line.108"></a>
<span class="sourceLineNo">109</span><a name="line.109"></a>
<span class="sourceLineNo">110</span>  /*<a name="line.110"></a>
<span class="sourceLineNo">111</span>   * 这种方法与上面的主要逻辑run（）方法有很大的关系。<a name="line.111"></a>
<span class="sourceLineNo">112</span>   * 所以这个方法只是一个主要逻辑的子程序。<a name="line.112"></a>
<span class="sourceLineNo">113</span>   * 小心！ 不要以类别成员方法的方式来思考这个方法。<a name="line.113"></a>
<span class="sourceLineNo">114</span>   * 所以，这个方法设置为“final”。<a name="line.114"></a>
<span class="sourceLineNo">115</span>   */<a name="line.115"></a>
<span class="sourceLineNo">116</span>  /**<a name="line.116"></a>
<span class="sourceLineNo">117</span>   * 匹配处理.<a name="line.117"></a>
<span class="sourceLineNo">118</span>   * @param mas Master<a name="line.118"></a>
<span class="sourceLineNo">119</span>   * @param tra Transaction<a name="line.119"></a>
<span class="sourceLineNo">120</span>   * @param proc 匹配处理<a name="line.120"></a>
<span class="sourceLineNo">121</span>   * @param arg 参数<a name="line.121"></a>
<span class="sourceLineNo">122</span>   * @throws Exception 处理过程中发生的异常。<a name="line.122"></a>
<span class="sourceLineNo">123</span>   * @since TeapotORM 0.0.2<a name="line.123"></a>
<span class="sourceLineNo">124</span>   */<a name="line.124"></a>
<span class="sourceLineNo">125</span>  private final void runKeyMatch(IKeyValue mas, IKeyValue tra, IMatch proc, Object arg)<a name="line.125"></a>
<span class="sourceLineNo">126</span>      throws Exception {<a name="line.126"></a>
<span class="sourceLineNo">127</span>    int compAttr;<a name="line.127"></a>
<span class="sourceLineNo">128</span>    boolean blAttr = false;<a name="line.128"></a>
<span class="sourceLineNo">129</span><a name="line.129"></a>
<span class="sourceLineNo">130</span>    for (int i = 1; ; i ++) {<a name="line.130"></a>
<span class="sourceLineNo">131</span>      // 比较属性部<a name="line.131"></a>
<span class="sourceLineNo">132</span>      compAttr = comAttrs(mas, tra, this.att);<a name="line.132"></a>
<span class="sourceLineNo">133</span>      ATTR: switch (compAttr) {<a name="line.133"></a>
<span class="sourceLineNo">134</span>        case MATCHED:<a name="line.134"></a>
<span class="sourceLineNo">135</span>          blAttr = true;<a name="line.135"></a>
<span class="sourceLineNo">136</span>          break ATTR;<a name="line.136"></a>
<span class="sourceLineNo">137</span>        default:<a name="line.137"></a>
<span class="sourceLineNo">138</span>          blAttr = false;<a name="line.138"></a>
<span class="sourceLineNo">139</span>          break ATTR;<a name="line.139"></a>
<span class="sourceLineNo">140</span>        }<a name="line.140"></a>
<span class="sourceLineNo">141</span><a name="line.141"></a>
<span class="sourceLineNo">142</span>      if (blAttr == false) {<a name="line.142"></a>
<span class="sourceLineNo">143</span>        proc.mismatch(mas, tra, arg);<a name="line.143"></a>
<span class="sourceLineNo">144</span>      }<a name="line.144"></a>
<span class="sourceLineNo">145</span><a name="line.145"></a>
<span class="sourceLineNo">146</span>      // 只有属性部也匹配的时候才执行doMatch().<a name="line.146"></a>
<span class="sourceLineNo">147</span>      if (blAttr == true &amp;&amp; proc.match(mas, tra, arg)) {<a name="line.147"></a>
<span class="sourceLineNo">148</span>        return;<a name="line.148"></a>
<span class="sourceLineNo">149</span>      }<a name="line.149"></a>
<span class="sourceLineNo">150</span><a name="line.150"></a>
<span class="sourceLineNo">151</span>      // 如果matching返回true继续。<a name="line.151"></a>
<span class="sourceLineNo">152</span>      mas = (IKeyValue) getMatchingMasterAhead(i);<a name="line.152"></a>
<span class="sourceLineNo">153</span>      if (mas == null) {<a name="line.153"></a>
<span class="sourceLineNo">154</span>        return;<a name="line.154"></a>
<span class="sourceLineNo">155</span>      }<a name="line.155"></a>
<span class="sourceLineNo">156</span>    }<a name="line.156"></a>
<span class="sourceLineNo">157</span>  }<a name="line.157"></a>
<span class="sourceLineNo">158</span><a name="line.158"></a>
<span class="sourceLineNo">159</span>  /**<a name="line.159"></a>
<span class="sourceLineNo">160</span>   * 主处理.<a name="line.160"></a>
<span class="sourceLineNo">161</span>   * @param proc 回调<a name="line.161"></a>
<span class="sourceLineNo">162</span>   * @param &lt;T1&gt; 数据类型.<a name="line.162"></a>
<span class="sourceLineNo">163</span>   * @param &lt;T2&gt; 数据类型.<a name="line.163"></a>
<span class="sourceLineNo">164</span>   * @throws Exception 处理过程中发生的异常.<a name="line.164"></a>
<span class="sourceLineNo">165</span>   */<a name="line.165"></a>
<span class="sourceLineNo">166</span>  protected &lt;T1 extends IKeyValue, T2 extends IKeyValue&gt; void run(IMatch proc) throws Exception {<a name="line.166"></a>
<span class="sourceLineNo">167</span>    // 读取Master<a name="line.167"></a>
<span class="sourceLineNo">168</span>    IKeyValue mas = readMas();<a name="line.168"></a>
<span class="sourceLineNo">169</span>    // 读取Transaction<a name="line.169"></a>
<span class="sourceLineNo">170</span>    IKeyValue tra = readTra();<a name="line.170"></a>
<span class="sourceLineNo">171</span><a name="line.171"></a>
<span class="sourceLineNo">172</span>    if (!NullList.isNull(mas, tra, proc, this)) {<a name="line.172"></a>
<span class="sourceLineNo">173</span>      return;<a name="line.173"></a>
<span class="sourceLineNo">174</span>    }<a name="line.174"></a>
<span class="sourceLineNo">175</span><a name="line.175"></a>
<span class="sourceLineNo">176</span>    boolean isMatched = false; // Generally speacking this flag is for Tra<a name="line.176"></a>
<span class="sourceLineNo">177</span>    boolean isMasterUsed = false; // This flag is for Mas<a name="line.177"></a>
<span class="sourceLineNo">178</span>    IKeyValue masMatched = null; // for backup 1(tra):N(mas) matching<a name="line.178"></a>
<span class="sourceLineNo">179</span>    int comp;<a name="line.179"></a>
<span class="sourceLineNo">180</span><a name="line.180"></a>
<span class="sourceLineNo">181</span>    MAIN: for (;;) {<a name="line.181"></a>
<span class="sourceLineNo">182</span>      // 循环transaction<a name="line.182"></a>
<span class="sourceLineNo">183</span>      COMP: for (;;) {<a name="line.183"></a>
<span class="sourceLineNo">184</span>        // 循环master<a name="line.184"></a>
<span class="sourceLineNo">185</span>        if (mas == null) {<a name="line.185"></a>
<span class="sourceLineNo">186</span>          // if master cannot be read, matching impossible.<a name="line.186"></a>
<span class="sourceLineNo">187</span>          break COMP;<a name="line.187"></a>
<span class="sourceLineNo">188</span>        }<a name="line.188"></a>
<span class="sourceLineNo">189</span><a name="line.189"></a>
<span class="sourceLineNo">190</span>        // 比较 keys<a name="line.190"></a>
<span class="sourceLineNo">191</span>        comp = compareKeys(mas, tra, mkeys);<a name="line.191"></a>
<span class="sourceLineNo">192</span>        switch (comp) {<a name="line.192"></a>
<span class="sourceLineNo">193</span>          case MATCHED:<a name="line.193"></a>
<span class="sourceLineNo">194</span>            isMasterUsed = true; // don't care about the result of<a name="line.194"></a>
<span class="sourceLineNo">195</span>            isMatched = true; // doMatching() =&gt; Deterministic<a name="line.195"></a>
<span class="sourceLineNo">196</span>            masMatched = mas;<a name="line.196"></a>
<span class="sourceLineNo">197</span>            // matching<a name="line.197"></a>
<span class="sourceLineNo">198</span>            // attributeMismatch<a name="line.198"></a>
<span class="sourceLineNo">199</span>            runKeyMatch(mas, tra, proc, arg);<a name="line.199"></a>
<span class="sourceLineNo">200</span>            break COMP;<a name="line.200"></a>
<span class="sourceLineNo">201</span><a name="line.201"></a>
<span class="sourceLineNo">202</span>          case TRA_AHEAD:<a name="line.202"></a>
<span class="sourceLineNo">203</span>            // if never used (if keys never matched with any master)<a name="line.203"></a>
<span class="sourceLineNo">204</span>            if (!isMasterUsed) {<a name="line.204"></a>
<span class="sourceLineNo">205</span>              proc.masterOnly(mas, arg);<a name="line.205"></a>
<span class="sourceLineNo">206</span>            } else {<a name="line.206"></a>
<span class="sourceLineNo">207</span>              masMatched = mas;<a name="line.207"></a>
<span class="sourceLineNo">208</span>            }<a name="line.208"></a>
<span class="sourceLineNo">209</span>            mas = readMas();<a name="line.209"></a>
<span class="sourceLineNo">210</span>            isMasterUsed = transactionAhead(mas, masMatched, mkeys, isMasterUsed);<a name="line.210"></a>
<span class="sourceLineNo">211</span>            continue COMP;<a name="line.211"></a>
<span class="sourceLineNo">212</span><a name="line.212"></a>
<span class="sourceLineNo">213</span>          case MAS_AHEAD:<a name="line.213"></a>
<span class="sourceLineNo">214</span>            break COMP;<a name="line.214"></a>
<span class="sourceLineNo">215</span><a name="line.215"></a>
<span class="sourceLineNo">216</span>          default:<a name="line.216"></a>
<span class="sourceLineNo">217</span>            return;<a name="line.217"></a>
<span class="sourceLineNo">218</span>        }<a name="line.218"></a>
<span class="sourceLineNo">219</span>      } // COMP<a name="line.219"></a>
<span class="sourceLineNo">220</span><a name="line.220"></a>
<span class="sourceLineNo">221</span>      if (!isMatched) {<a name="line.221"></a>
<span class="sourceLineNo">222</span>        // if no matching record exists, do some proc<a name="line.222"></a>
<span class="sourceLineNo">223</span>        proc.transactionOnly(tra, arg);<a name="line.223"></a>
<span class="sourceLineNo">224</span>      }<a name="line.224"></a>
<span class="sourceLineNo">225</span><a name="line.225"></a>
<span class="sourceLineNo">226</span>      // read next transaction and initialize the control flag<a name="line.226"></a>
<span class="sourceLineNo">227</span>      tra = readTra();<a name="line.227"></a>
<span class="sourceLineNo">228</span>      if (tra == null) {<a name="line.228"></a>
<span class="sourceLineNo">229</span>        break MAIN;<a name="line.229"></a>
<span class="sourceLineNo">230</span>      }<a name="line.230"></a>
<span class="sourceLineNo">231</span><a name="line.231"></a>
<span class="sourceLineNo">232</span>      isMatched = false;<a name="line.232"></a>
<span class="sourceLineNo">233</span>    } // MAIN<a name="line.233"></a>
<span class="sourceLineNo">234</span><a name="line.234"></a>
<span class="sourceLineNo">235</span>    finish(mas, masMatched, mkeys, proc, arg);<a name="line.235"></a>
<span class="sourceLineNo">236</span>  }<a name="line.236"></a>
<span class="sourceLineNo">237</span><a name="line.237"></a>
<span class="sourceLineNo">238</span>  /**<a name="line.238"></a>
<span class="sourceLineNo">239</span>   * This method is additionally introduced for 1(Tra):N(Mas) mathcing. Expected<a name="line.239"></a>
<span class="sourceLineNo">240</span>   * Use) This method is expected to be called from doMatch(). This method is<a name="line.240"></a>
<span class="sourceLineNo">241</span>   * necessary to check whether the following records might have the same<a name="line.241"></a>
<span class="sourceLineNo">242</span>   * matching keys. Policy of Matching Procedure Frame) I. The index of master<a name="line.242"></a>
<span class="sourceLineNo">243</span>   * and transaction never decrement. II. The index of master and transaction<a name="line.243"></a>
<span class="sourceLineNo">244</span>   * never be controlled from outside of this class (private state). No control<a name="line.244"></a>
<span class="sourceLineNo">245</span>   * method is provided. Case Study) 1. Keys are matched but attributes such as<a name="line.245"></a>
<span class="sourceLineNo">246</span>   * effective data are invalid. 2. The following master record(s) might have<a name="line.246"></a>
<span class="sourceLineNo">247</span>   * the same keys and the valid attributes. 3. Use the valid master record as<a name="line.247"></a>
<span class="sourceLineNo">248</span>   * the matching AND "valid" record. 4. The next "transaction" may have the<a name="line.248"></a>
<span class="sourceLineNo">249</span>   * same keys. 5. The next transaction may find matching and valid record among<a name="line.249"></a>
<span class="sourceLineNo">250</span>   * master records, which are already examined with the previous transaction.<a name="line.250"></a>
<span class="sourceLineNo">251</span>   * Note: This method can be accessed from non-children classes if they are in<a name="line.251"></a>
<span class="sourceLineNo">252</span>   * the same package. But introducing sub packages requires to let this be<a name="line.252"></a>
<span class="sourceLineNo">253</span>   * public.<a name="line.253"></a>
<span class="sourceLineNo">254</span>   * @param offset offset<a name="line.254"></a>
<span class="sourceLineNo">255</span>   * @return Object 结果<a name="line.255"></a>
<span class="sourceLineNo">256</span>   */<a name="line.256"></a>
<span class="sourceLineNo">257</span>  public Object getMatchingMasterAhead(int offset) {<a name="line.257"></a>
<span class="sourceLineNo">258</span>    int current = getMasterIndex();<a name="line.258"></a>
<span class="sourceLineNo">259</span>    if (this.loMas == null || this.loMas.size() == 0 || offset &lt; 0<a name="line.259"></a>
<span class="sourceLineNo">260</span>        || this.loMas.size() &lt;= current + offset) {<a name="line.260"></a>
<span class="sourceLineNo">261</span>      return null;<a name="line.261"></a>
<span class="sourceLineNo">262</span>    }<a name="line.262"></a>
<span class="sourceLineNo">263</span><a name="line.263"></a>
<span class="sourceLineNo">264</span>    // since idx was moved forward by one after read()<a name="line.264"></a>
<span class="sourceLineNo">265</span>    if (compareMasterKeys(current, offset)) {<a name="line.265"></a>
<span class="sourceLineNo">266</span>      return this.loMas.get(current + offset);<a name="line.266"></a>
<span class="sourceLineNo">267</span>    } else {<a name="line.267"></a>
<span class="sourceLineNo">268</span>      return null;<a name="line.268"></a>
<span class="sourceLineNo">269</span>    }<a name="line.269"></a>
<span class="sourceLineNo">270</span>  }<a name="line.270"></a>
<span class="sourceLineNo">271</span><a name="line.271"></a>
<span class="sourceLineNo">272</span>  /**<a name="line.272"></a>
<span class="sourceLineNo">273</span>   * Don't leak information (Keep private/encupsulation/information hiding) =&gt;<a name="line.273"></a>
<span class="sourceLineNo">274</span>   * Outside of this class, no information about index, current/offset.<a name="line.274"></a>
<span class="sourceLineNo">275</span>   */<a name="line.275"></a>
<span class="sourceLineNo">276</span>  private boolean compareMasterKeys(int current, int offset) {<a name="line.276"></a>
<span class="sourceLineNo">277</span>    IKeyValue currentRecord = (IKeyValue) getMaster(current);<a name="line.277"></a>
<span class="sourceLineNo">278</span>    IKeyValue aheadRecord   = (IKeyValue) getMaster(current + offset);<a name="line.278"></a>
<span class="sourceLineNo">279</span>    if (aheadRecord == null) {<a name="line.279"></a>
<span class="sourceLineNo">280</span>      return false;<a name="line.280"></a>
<span class="sourceLineNo">281</span>    }<a name="line.281"></a>
<span class="sourceLineNo">282</span>    for (int i = 0; i &lt; this.mkeys.size(); i++) {<a name="line.282"></a>
<span class="sourceLineNo">283</span>      @SuppressWarnings({ "unchecked", "rawtypes" })<a name="line.283"></a>
<span class="sourceLineNo">284</span>      int comp = ((Comparable) currentRecord.get((String) this.mkeys.get(i)))<a name="line.284"></a>
<span class="sourceLineNo">285</span>          .compareTo(aheadRecord.get((String) this.mkeys.get(i)));<a name="line.285"></a>
<span class="sourceLineNo">286</span>      if (comp &gt; 0) {<a name="line.286"></a>
<span class="sourceLineNo">287</span>        return false;<a name="line.287"></a>
<span class="sourceLineNo">288</span>      } else if (comp &lt; 0) {<a name="line.288"></a>
<span class="sourceLineNo">289</span>        return false;<a name="line.289"></a>
<span class="sourceLineNo">290</span>      }<a name="line.290"></a>
<span class="sourceLineNo">291</span>    } // COMP<a name="line.291"></a>
<span class="sourceLineNo">292</span>    return true;<a name="line.292"></a>
<span class="sourceLineNo">293</span>  }<a name="line.293"></a>
<span class="sourceLineNo">294</span><a name="line.294"></a>
<span class="sourceLineNo">295</span>  /**<a name="line.295"></a>
<span class="sourceLineNo">296</span>   * Don't leak information (Keep private/encupsulation/information hiding) =&gt;<a name="line.296"></a>
<span class="sourceLineNo">297</span>   * Outside of this class, no information about index, current/offset.<a name="line.297"></a>
<span class="sourceLineNo">298</span>   */<a name="line.298"></a>
<span class="sourceLineNo">299</span>  private Object getMaster(int position) {<a name="line.299"></a>
<span class="sourceLineNo">300</span>    if (this.loMas == null || this.loMas.size() == 0<a name="line.300"></a>
<span class="sourceLineNo">301</span>        || this.loMas.size() &lt;= position) {<a name="line.301"></a>
<span class="sourceLineNo">302</span>      return null;<a name="line.302"></a>
<span class="sourceLineNo">303</span>    }<a name="line.303"></a>
<span class="sourceLineNo">304</span>    return this.loMas.get(position); // since idx was moved forward by one after read()<a name="line.304"></a>
<span class="sourceLineNo">305</span>  }<a name="line.305"></a>
<span class="sourceLineNo">306</span><a name="line.306"></a>
<span class="sourceLineNo">307</span>  /**<a name="line.307"></a>
<span class="sourceLineNo">308</span>   * This method is heavily related with the above main logic, run() method.<a name="line.308"></a>
<span class="sourceLineNo">309</span>   * Therefore this method is just a subrutione of the main logic. Caution ! DO<a name="line.309"></a>
<span class="sourceLineNo">310</span>   * NOT THINK ABOUT THIS METHOD AS A CLASS MEMBER METHOD. So, this method is<a name="line.310"></a>
<span class="sourceLineNo">311</span>   * set to "final".<a name="line.311"></a>
<span class="sourceLineNo">312</span>   */<a name="line.312"></a>
<span class="sourceLineNo">313</span>  private final boolean transactionAhead(IKeyValue tra, IKeyValue traMatched,<a name="line.313"></a>
<span class="sourceLineNo">314</span>      List&lt;String&gt; mkeys, boolean isMasterUsed) {<a name="line.314"></a>
<span class="sourceLineNo">315</span>    int compTra;<a name="line.315"></a>
<span class="sourceLineNo">316</span>    if (tra == null) {<a name="line.316"></a>
<span class="sourceLineNo">317</span>      return isMasterUsed;<a name="line.317"></a>
<span class="sourceLineNo">318</span>    }<a name="line.318"></a>
<span class="sourceLineNo">319</span>    // for the key comparison with the following master record<a name="line.319"></a>
<span class="sourceLineNo">320</span>    if (traMatched == null) {<a name="line.320"></a>
<span class="sourceLineNo">321</span>      compTra = MAS_AHEAD;<a name="line.321"></a>
<span class="sourceLineNo">322</span>    } else {<a name="line.322"></a>
<span class="sourceLineNo">323</span>      compTra = compareKeys(tra, traMatched, mkeys);<a name="line.323"></a>
<span class="sourceLineNo">324</span>    }<a name="line.324"></a>
<span class="sourceLineNo">325</span>    TRA_KEY: switch (compTra) {<a name="line.325"></a>
<span class="sourceLineNo">326</span>      case MATCHED:<a name="line.326"></a>
<span class="sourceLineNo">327</span>        isMasterUsed = true;<a name="line.327"></a>
<span class="sourceLineNo">328</span>        break TRA_KEY;<a name="line.328"></a>
<span class="sourceLineNo">329</span>      default:<a name="line.329"></a>
<span class="sourceLineNo">330</span>        isMasterUsed = false;<a name="line.330"></a>
<span class="sourceLineNo">331</span>        break TRA_KEY;<a name="line.331"></a>
<span class="sourceLineNo">332</span>    }<a name="line.332"></a>
<span class="sourceLineNo">333</span>    return isMasterUsed;<a name="line.333"></a>
<span class="sourceLineNo">334</span>  } // transactionAhead<a name="line.334"></a>
<span class="sourceLineNo">335</span><a name="line.335"></a>
<span class="sourceLineNo">336</span>  /**<a name="line.336"></a>
<span class="sourceLineNo">337</span>   * This method is heavily related with the above main logic, run() method.<a name="line.337"></a>
<span class="sourceLineNo">338</span>   * Therefore this method is just a subrutione of the main logic. Caution ! DO<a name="line.338"></a>
<span class="sourceLineNo">339</span>   * NOT THINK ABOUT THIS METHOD AS A CLASS MEMBER METHOD. So, this method is<a name="line.339"></a>
<span class="sourceLineNo">340</span>   * set to "final".<a name="line.340"></a>
<span class="sourceLineNo">341</span>   */<a name="line.341"></a>
<span class="sourceLineNo">342</span>  private final void finish(IKeyValue mas, IKeyValue masMatched, List&lt;String&gt; mkeys,<a name="line.342"></a>
<span class="sourceLineNo">343</span>      IMatch proc, Object param) throws Exception {<a name="line.343"></a>
<span class="sourceLineNo">344</span>    // Calling back procedure class to let it know the no transaction<a name="line.344"></a>
<span class="sourceLineNo">345</span>    // won't be examined for the lest of master records<a name="line.345"></a>
<span class="sourceLineNo">346</span>    if (mas == null) {<a name="line.346"></a>
<span class="sourceLineNo">347</span>      return;<a name="line.347"></a>
<span class="sourceLineNo">348</span>    }<a name="line.348"></a>
<span class="sourceLineNo">349</span><a name="line.349"></a>
<span class="sourceLineNo">350</span>    int compMas;<a name="line.350"></a>
<span class="sourceLineNo">351</span>    boolean isMasterUsed;<a name="line.351"></a>
<span class="sourceLineNo">352</span>    while (true) {<a name="line.352"></a>
<span class="sourceLineNo">353</span>      // for the key comparison with the following<a name="line.353"></a>
<span class="sourceLineNo">354</span>      // master records<a name="line.354"></a>
<span class="sourceLineNo">355</span>      if (masMatched == null) {<a name="line.355"></a>
<span class="sourceLineNo">356</span>        compMas = MAS_AHEAD;<a name="line.356"></a>
<span class="sourceLineNo">357</span>      } else {<a name="line.357"></a>
<span class="sourceLineNo">358</span>        compMas = compareKeys(mas, masMatched, mkeys);<a name="line.358"></a>
<span class="sourceLineNo">359</span>      }<a name="line.359"></a>
<span class="sourceLineNo">360</span>      MAS_KEY: switch (compMas) {<a name="line.360"></a>
<span class="sourceLineNo">361</span>        case MATCHED:<a name="line.361"></a>
<span class="sourceLineNo">362</span>          isMasterUsed = true;<a name="line.362"></a>
<span class="sourceLineNo">363</span>          break MAS_KEY;<a name="line.363"></a>
<span class="sourceLineNo">364</span>        default:<a name="line.364"></a>
<span class="sourceLineNo">365</span>          isMasterUsed = false;<a name="line.365"></a>
<span class="sourceLineNo">366</span>          masMatched = null; // Once un-matched, Never match again<a name="line.366"></a>
<span class="sourceLineNo">367</span>          // Unless null specified, meaningless<a name="line.367"></a>
<span class="sourceLineNo">368</span>          // key comparision will be run<a name="line.368"></a>
<span class="sourceLineNo">369</span>          break MAS_KEY;<a name="line.369"></a>
<span class="sourceLineNo">370</span>      }<a name="line.370"></a>
<span class="sourceLineNo">371</span><a name="line.371"></a>
<span class="sourceLineNo">372</span>      if (!isMasterUsed) {<a name="line.372"></a>
<span class="sourceLineNo">373</span>        proc.masterOnly(mas, param);<a name="line.373"></a>
<span class="sourceLineNo">374</span>      }<a name="line.374"></a>
<span class="sourceLineNo">375</span><a name="line.375"></a>
<span class="sourceLineNo">376</span>      mas = readMas();<a name="line.376"></a>
<span class="sourceLineNo">377</span>      if (mas == null) {<a name="line.377"></a>
<span class="sourceLineNo">378</span>        return;<a name="line.378"></a>
<span class="sourceLineNo">379</span>      }<a name="line.379"></a>
<span class="sourceLineNo">380</span>    }<a name="line.380"></a>
<span class="sourceLineNo">381</span>  }<a name="line.381"></a>
<span class="sourceLineNo">382</span><a name="line.382"></a>
<span class="sourceLineNo">383</span>  @SuppressWarnings("unchecked")<a name="line.383"></a>
<span class="sourceLineNo">384</span>  protected int compareKeys(IKeyValue mas, IKeyValue tra, List&lt;String&gt; mkeys) {<a name="line.384"></a>
<span class="sourceLineNo">385</span>    for (int i = 0; i &lt; mkeys.size(); i++) {<a name="line.385"></a>
<span class="sourceLineNo">386</span>      String mkey = (String) mkeys.get(i);<a name="line.386"></a>
<span class="sourceLineNo">387</span>      int comp = 0;<a name="line.387"></a>
<span class="sourceLineNo">388</span>      try {<a name="line.388"></a>
<span class="sourceLineNo">389</span>        System.out.println("[DefaultMatchInstance::compareKeys]" + mas + "=" + tra + "=" + mkey);<a name="line.389"></a>
<span class="sourceLineNo">390</span>        @SuppressWarnings("rawtypes")<a name="line.390"></a>
<span class="sourceLineNo">391</span>        Comparable c1 = (Comparable) tra.get(mkey);<a name="line.391"></a>
<span class="sourceLineNo">392</span>        @SuppressWarnings("rawtypes")<a name="line.392"></a>
<span class="sourceLineNo">393</span>        Comparable c2 = (Comparable) mas.get(mkey);<a name="line.393"></a>
<span class="sourceLineNo">394</span>        comp = c1.compareTo(c2);<a name="line.394"></a>
<span class="sourceLineNo">395</span>      } catch (ClassCastException cce) {<a name="line.395"></a>
<span class="sourceLineNo">396</span>        cce.printStackTrace();<a name="line.396"></a>
<span class="sourceLineNo">397</span>      }<a name="line.397"></a>
<span class="sourceLineNo">398</span><a name="line.398"></a>
<span class="sourceLineNo">399</span>      if (comp &gt; 0) {<a name="line.399"></a>
<span class="sourceLineNo">400</span>        return TRA_AHEAD;<a name="line.400"></a>
<span class="sourceLineNo">401</span>      } else if (comp &lt; 0) {<a name="line.401"></a>
<span class="sourceLineNo">402</span>        return MAS_AHEAD;<a name="line.402"></a>
<span class="sourceLineNo">403</span>      }<a name="line.403"></a>
<span class="sourceLineNo">404</span>    } // COMP<a name="line.404"></a>
<span class="sourceLineNo">405</span>    return 0;<a name="line.405"></a>
<span class="sourceLineNo">406</span>  }<a name="line.406"></a>
<span class="sourceLineNo">407</span><a name="line.407"></a>
<span class="sourceLineNo">408</span>  /**<a name="line.408"></a>
<span class="sourceLineNo">409</span>   * 比较属性.<a name="line.409"></a>
<span class="sourceLineNo">410</span>   * @param mas Master<a name="line.410"></a>
<span class="sourceLineNo">411</span>   * @param tra Transaction<a name="line.411"></a>
<span class="sourceLineNo">412</span>   * @param attr 属性<a name="line.412"></a>
<span class="sourceLineNo">413</span>   * @return 比较结果。<a name="line.413"></a>
<span class="sourceLineNo">414</span>   */<a name="line.414"></a>
<span class="sourceLineNo">415</span>  protected int comAttrs(IKeyValue mas, IKeyValue tra, List&lt;String&gt; attr) {<a name="line.415"></a>
<span class="sourceLineNo">416</span>    if (attr == null) {<a name="line.416"></a>
<span class="sourceLineNo">417</span>      // System.out.println("[Warning!] Keys for Attributes is null!");<a name="line.417"></a>
<span class="sourceLineNo">418</span>      return 0;<a name="line.418"></a>
<span class="sourceLineNo">419</span>    }<a name="line.419"></a>
<span class="sourceLineNo">420</span>    COMP: for (int i = 0; i &lt; attr.size(); i++) {<a name="line.420"></a>
<span class="sourceLineNo">421</span>      // Get attribute name<a name="line.421"></a>
<span class="sourceLineNo">422</span>      String name = (String) attr.get(i);<a name="line.422"></a>
<span class="sourceLineNo">423</span><a name="line.423"></a>
<span class="sourceLineNo">424</span>      // Retrieve object as object to check type<a name="line.424"></a>
<span class="sourceLineNo">425</span>      @SuppressWarnings("rawtypes")<a name="line.425"></a>
<span class="sourceLineNo">426</span>      Comparable traObj = (Comparable) tra.get(name);<a name="line.426"></a>
<span class="sourceLineNo">427</span>      @SuppressWarnings("rawtypes")<a name="line.427"></a>
<span class="sourceLineNo">428</span>      Comparable masObj = (Comparable) mas.get(name);<a name="line.428"></a>
<span class="sourceLineNo">429</span><a name="line.429"></a>
<span class="sourceLineNo">430</span>      if (traObj == null &amp;&amp; masObj == null) {<a name="line.430"></a>
<span class="sourceLineNo">431</span>        continue COMP; // handle the same attribute ( null == null )<a name="line.431"></a>
<span class="sourceLineNo">432</span>      }<a name="line.432"></a>
<span class="sourceLineNo">433</span>      if (traObj == null) {<a name="line.433"></a>
<span class="sourceLineNo">434</span>        return MAS_AHEAD;<a name="line.434"></a>
<span class="sourceLineNo">435</span>      }<a name="line.435"></a>
<span class="sourceLineNo">436</span>      if (masObj == null) {<a name="line.436"></a>
<span class="sourceLineNo">437</span>        return TRA_AHEAD;<a name="line.437"></a>
<span class="sourceLineNo">438</span>      }<a name="line.438"></a>
<span class="sourceLineNo">439</span><a name="line.439"></a>
<span class="sourceLineNo">440</span>      @SuppressWarnings("unchecked")<a name="line.440"></a>
<span class="sourceLineNo">441</span>      int comp = traObj.compareTo(masObj);<a name="line.441"></a>
<span class="sourceLineNo">442</span><a name="line.442"></a>
<span class="sourceLineNo">443</span>      if (comp != 0 &amp;&amp; traObj instanceof String) {<a name="line.443"></a>
<span class="sourceLineNo">444</span>        String enc1 = (String) traObj;<a name="line.444"></a>
<span class="sourceLineNo">445</span>        String enc2 = (String) masObj;<a name="line.445"></a>
<span class="sourceLineNo">446</span><a name="line.446"></a>
<span class="sourceLineNo">447</span>        comp = enc1.compareTo(enc2);<a name="line.447"></a>
<span class="sourceLineNo">448</span>        if (comp == 0) {<a name="line.448"></a>
<span class="sourceLineNo">449</span>          System.out.println("[MatchingFrameAttribute] Char Code Different"<a name="line.449"></a>
<span class="sourceLineNo">450</span>              + traObj + "/" + masObj);<a name="line.450"></a>
<span class="sourceLineNo">451</span>        }<a name="line.451"></a>
<span class="sourceLineNo">452</span>      }<a name="line.452"></a>
<span class="sourceLineNo">453</span><a name="line.453"></a>
<span class="sourceLineNo">454</span>      if (comp &gt; 0) {<a name="line.454"></a>
<span class="sourceLineNo">455</span>        return TRA_AHEAD;<a name="line.455"></a>
<span class="sourceLineNo">456</span>      } else if (comp &lt; 0) {<a name="line.456"></a>
<span class="sourceLineNo">457</span>        return MAS_AHEAD;<a name="line.457"></a>
<span class="sourceLineNo">458</span>      }<a name="line.458"></a>
<span class="sourceLineNo">459</span>    } // COMP<a name="line.459"></a>
<span class="sourceLineNo">460</span>    return 0;<a name="line.460"></a>
<span class="sourceLineNo">461</span>  }<a name="line.461"></a>
<span class="sourceLineNo">462</span><a name="line.462"></a>
<span class="sourceLineNo">463</span>  protected IKeyValue readMas() {<a name="line.463"></a>
<span class="sourceLineNo">464</span>    if (this.loMas == null || this.loMas.size() == 0<a name="line.464"></a>
<span class="sourceLineNo">465</span>        || this.loMas.size() == this.idxMas) {<a name="line.465"></a>
<span class="sourceLineNo">466</span>      return null;<a name="line.466"></a>
<span class="sourceLineNo">467</span>    }<a name="line.467"></a>
<span class="sourceLineNo">468</span>    return (IKeyValue) this.loMas.get(this.idxMas++);<a name="line.468"></a>
<span class="sourceLineNo">469</span>  }<a name="line.469"></a>
<span class="sourceLineNo">470</span><a name="line.470"></a>
<span class="sourceLineNo">471</span>  protected IKeyValue readTra() {<a name="line.471"></a>
<span class="sourceLineNo">472</span>    if (this.loTra == null || this.loTra.size() == 0<a name="line.472"></a>
<span class="sourceLineNo">473</span>        || this.loTra.size() == this.idxTra) {<a name="line.473"></a>
<span class="sourceLineNo">474</span>      return null;<a name="line.474"></a>
<span class="sourceLineNo">475</span>    }<a name="line.475"></a>
<span class="sourceLineNo">476</span>    return (IKeyValue) this.loTra.get(this.idxTra++);<a name="line.476"></a>
<span class="sourceLineNo">477</span>  }<a name="line.477"></a>
<span class="sourceLineNo">478</span><a name="line.478"></a>
<span class="sourceLineNo">479</span>  /**<a name="line.479"></a>
<span class="sourceLineNo">480</span>   * 返回Master索引.<a name="line.480"></a>
<span class="sourceLineNo">481</span>   * @return Master索引.<a name="line.481"></a>
<span class="sourceLineNo">482</span>   */<a name="line.482"></a>
<span class="sourceLineNo">483</span>  public int getMasterIndex() {<a name="line.483"></a>
<span class="sourceLineNo">484</span>    return this.idxMas - 1;<a name="line.484"></a>
<span class="sourceLineNo">485</span>  }<a name="line.485"></a>
<span class="sourceLineNo">486</span>}<a name="line.486"></a>




























































</pre>
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